Improvement in gang-plows



S'Sheetsr-Sheet V2.

LUKE CHAPMAN Patented No\r.7,1871.v Improvement in Gang Flows.

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UNITED STATES PATET OFFICE.

LUKE CHAPMAN, OF COLLINSVILLE, CONNECTICUT, ASSIGNOR TO HIMSELF AND THECOLLINS COMPANY, OF SAME PLACE.

lNPROVEMENT iN GANG-FLOWS.

Specification forming part of Letters Patent No. 120,572, dated November7, 1871.

To all whom it may concern:

Be it known that l, LUKE CHAPMAN, of Collinsville, in the county ofHartford and State of Connecticut, have invented an Improved Gang- Plow,of which the following is a specification:

This invention is an improved apparatus for agricultural use, forplowing with two or more plows at the same'time, turning two or morefurrows in the earth at once. It is more particularly intended for usewith steam traction-engines, though of course any other power ma-ybeapplied.

Figure lis a side elevation, with the wheels and axle in an exactlyreverse position from that of actual use for the purpose of bettershowing the form and arrangement of the various parts. Fig. 2 is a planview of the gang-plow in the same position as in Fig. l. Fig. 3 is adetached view of the standard which rises immediately from the axle,together with the devices for lifting the plows, for reversing the setsof plows, and for oscillating them horizontally. Fig. 4 is a detachedenlarged view of the reverse side of the parts shown in Fig. 3.

The letter a indicates the beam to which the` plows arehung, madepreferably of ahollow metal tube, on one side of which is attached a setof two or more right-hand plows, al al. On the exactly opposite side isattached a similar set of lefthand plows, a2 a2. Both sets are attachedto the beam at such an angle as will make their landsides point straightforward when the plows are at Work. As this beam is reversible, it isnot positively necessary that the sets of plows should be opposed toeach other, for it is manifest that the sets might be placed at rightangles or other angles 5 but it is preferred that they should be placedopposite for the purpose of balancing each other. Neither is thisinvention limited to just the arrangement and kind of plows indicatedabove, for, with a reversible beam and the other combined mechanicaldevices, it is adapted to all kinds and degrees of plowing; forinstance,sets of alternate right-and-left-hand plows may be opposed to each otherfor the purpose of eultivating crops after the rst breaking, turningback-furrows, or in preparing soil specially for special crops; andsuitable arrangements will also suggest thelnselves for trench, ridge,and other kinds of plowing, and for all kinds of work now done bydouble-furrow and shovel-plows and cultivators. rlhe beam c is hung inthe swivel b,

which turns in the sliding block b1 running through the same, andcollared upon either side thereof so that it cannot escape therefrom. he

worm-gear c forms the rear one of these col-- lars, and into it meshesthe worm c1, which is upon the shaft c2, hung in bearings c3, att-achedto the upper corners of the sliding block, and actuated by the crank-armc, by means of which the operator of the machine can reverse thepositions of the two respective sets of plows and put either set atwork, as he desires. The sliding block b1 slides vertically on ways inthe open interior of the standard d. It is suspended from the top ofthestandard by means of a hydraulic liftin gjack, composed principally ofthe exterior parts. barrel d1, piston-rod d?, and handle d3. Of coursethis sliding block and its dependent plows might be suspended herein bya screw or other common lifting device of great power; but the de vicepresented is the one preferred for its power and ease of operation. Bymeans of this hydraulic jack the plows can be raised or lowered by theoperator, as desired. The standard d at its foot rests on and isattached to the bed-plate f, which is pivoted horizontally on theaxleplate f1, just beneath it, which latter is firmly fastened to theaxle g. At one side, on the outer circumference of the bed-plate f, ishung the shaftf, actuated by the crank f3, and having a worm, f4,thereon, meshing into -the worm-teeth f5 attached to the axle-plate f1,whereby the operator may oscillate the bed-plate j', and with it thestandard and plows, so as to make the beam c observe any desired anglewith the axle g. On the outer circumference of the axle-platef1 arethree stop-marks,z fil i2, which will be traveled over by the printedend f6 of the bed-platef when it is revolved horizontally on theaxleplate f1. These three stop-marks indica-te the three positions whichit is desirable for the beam a to observe with reference to the axle gat different times. When the pointer f 6 is on the stop, mark i1 thebeam is at right angles to the axleand is in position for being drawn omone place to another, the drawing power being attached at the front enda3 of the beam. When the pointer f 6 is upon the stop-mark i and the setof righthand plows is undermost, the machine is in the proper positionfor putting this set of plows at work. When the pointer f 6 is upon thestopmark 2 and the set of left-hand plows is undermost, then the machineis in position for putting this set of plows Work. When the pointer f 6is upon the stop-mark fil and it 'is intended to move the plor from oneplace to another, then the beam a should be turned so as to ha-ve bothsets of ploWs project out horizontally therefrom. From the front end ofthe beam a the arc of a circle, o, extends, Whose center is directlyover the pivot which attaches the bed-platef to the aXle-platef1, and onthis arc slides the band 01, which can be set at any point on the arc bythe set-screw o2, and to the front of which is attached a link, o3, toWhich the drawing power is to be attached when the machine is at Work.nFrom the back of the band o1 a draw-rcd, 04, runs back to near thestandard d and attaches to the beam a. Practically the bandol is set atsuch a point 0n the arc o that the draw-rod o4 Will be straight over theline of draft when the plovvs are at Work. Just in front of the ploWs isa gauge-Wheel, m, attached by the crank-arm m1 to thebeam ce, and itsshaft m2 running through the beam a and firmly attached to the circularplate fn, Which has reversed. The axle g is hung belovs7 the centers oi'the Wheels a' by means of arms g1 g2. The parts are all of metal. I

I claim as my inventionl. The beam a, made reversible, and provided Withsets of ploWs both before and behind the point of suspension,substantially as described.

2. The reversible beam a combined With the swivel b, sliding block p1,and standard d, and made rotary by means of the Worm-gear c and Worm c1,substantially as described.

3. The parts as clailned in the immediately pre1 ceding clause, combinedWith the lifting jack described7 substantially as described.

4. The standard d having a reversible beam a hun g therein, and madeoscillatory sideWise upon the main axle g by means of the belt-plate fpivoted to the axle-plate f1, and the Worm f4 and Worm-teeth f 5,substantially as described.

6. In combination With a reversible plow-beam, a, the gauge-Wheel m,attached adjustably thereto, substantially as described.

7. A plow-beam, a, made reversible by mechanism substantially asdescribed, made adjust able vertically and sidewise by mechanismsubstantially as described, and the Whole hung on a main axle, g,permanently sunk below the level ofthe centers of the supporting-Wheel,substantially as described.

LUKE CHAPMAN. Witnesses:

JASPER H. BIDWELL,

WM. E. SnvroNDs. (114)

